A comparison of survival models for assessing risk of racehorse fatality

Risk factors for equine fractures in Thoroughbred flat racing in North America

“…Lyle et al (2012) found that the more starts a horse had within the last 60 days the less the risk of injury. Henley et al (2006) also found a decrease in risk of injury the more starts a horse had during the year prior a race but Boden et al (2007) looking specifically at the starts in the 31-60 days period prior the race, found a higher risk for fatal injuries if the horse had a start. The risk of fracture was also higher for horses that did no gallop work during training (Parkin et al, 2005) but horses that accumulated an excess timed work distance within a 2 month period prior a race were at higher risk as well (Estberg et al, 1996a).…”

“…Horse-related risk factors, such as the age, the sex, and the prior racing history of the horse, have been shown to be associated with injuries: age (Estberg et al, 1996a;Estberg et al, 1998a,b;Williams et al, 2001;Parkin et al, 2005;Henley et al, 2006;Lyle et al, 2012) has been shown to be a sigAbbreviations: AIC, Akaike's information criterion; CI, confidence interval; EID, equine injury database. nificant risk factor with older horses having a higher risk of injury.…”

“…Male horses have also been shown to have a higher risk of injury (Estberg et al, 1996a;Estberg et al, 1998a,b;Hernandez et al, 2001;Hernandez et al, 2005). The prior racing history of a horse was also found to be associated with injuries (Estberg et al, 1995;Hernandez et al, 2001;Hernandez et al, 2005;Parkin et al, 2005;Henley et al, 2006;Boden et al, 2007;Lyle et al, 2012). If there was an extended interval since the last race the risk for catastrophic injury was higher (Hernandez et al, 2001;Hernandez et al, 2005).…”

“…The racing surface and its conditions have been shown to be associated with injuries (Hernandez et al, 2001) (Williams et al, 2001;Parkin et al, 2004a,b;Parkin et al, 2005;Henley et al, 2006), the distance of the race (Peloso et al, 1994;Parkin et al, 2004b;Henley et al, 2006;Boden et al, 2007;Lyle et al, 2012), the field size (Parkin et al, 2004b;Parkin et al, 2005;Lyle et al, 2012), the type of the race (Estberg et al, 1998a,b;Henley et al, 2006) and even the season the race took place in (Boden et al, 2007;Lyle et al, 2012).…”

Factors that affect whether Arabian horses have earnings during their first year of racing

“…Previous studies also reported that age was a significant factor in racing times (12), best racing times (13), and earnings (14). Moreover, other studies reported that early starts have a positive influence on racing careers (6,9,15). Age at first start can depend on many factors, including maturity, musculoskeletal development, racing calendar, and the desire of the breeder.…”